But the 22-year-old has struggled to reproduce that form in English football, having scored just five times – with only one of those strikes coming from open play – in 30 appearances across all competitions.

Harry Kane's recent ankle ligament injury looks set to keep the England star out of action for at least a month, meaning Janssen is likely to play a bigger role towards the end of the season, together with Son Heung-min.

And Pochettino is adamant that, although the forward is still adapting, Spurs are satisfied with Janssen's progress and trust him to step up when needed following his first goal from open play in the FA Cup win over Millwall.

"We are happy with him," Pochettino told reporters ahead of Sunday's visit of Southampton. "It's true that in some periods of the season his form was down.